package com.itheima.reggie.controller;

import com.itheima.reggie.common.R;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.multipart.MultipartFile;

import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.UUID;

/**
 * @author: Liu
 * @date: 2022/02/27
 * @time: 10:24
 */

@Controller
@RequestMapping("/common")
public class CommonController {

    @Value("${dish.path}")
    private String path;

    @PostMapping("/upload")
    @ResponseBody
    public R<String> upload(MultipartFile file) throws IOException {
        String originalFilename = file.getOriginalFilename();
        String substring = originalFilename.substring(originalFilename.lastIndexOf("."));
        String s = UUID.randomUUID().toString() + substring;
        //File file1 = new File("D:\\");
        File file1 = new File(path);
        if (!file1.exists()) {
            file1.mkdirs();
        }
        file.transferTo(new File(path + s));
        return R.success(s);
    }

    @GetMapping("/download")
    public void download(String name, HttpServletResponse response) throws IOException {
        FileInputStream fileInputStream = new FileInputStream(new File(path + name));
        ServletOutputStream outputStream = response.getOutputStream();
        response.setContentType("image/jpeg");

        int len = 0;
        byte[] bytes = new byte[1024];
        while ((len = fileInputStream.read(bytes)) != -1) {
            outputStream.write(bytes, 0, len);
            outputStream.flush();
        }
        outputStream.close();
        fileInputStream.close();
    }



}
